Suture anchor fixation realizes the physiological reconstruction and repair of tibiofibular syndesmotic injury / 中国组织工程研究

ABSTRACT

BACKGROUND:The traditional surgical method have large trauma in the treatment of tibiofibular syndesmosis injury, and cannot wel complete the repair of ligament. But the suture anchor has clear effect for ligament repair, ligament reconstruction and bone connection. OBJECTIVE:To investigate the biomechanical properties of the suture anchor in the treatment of tibiofibular syndesmotic injury, and to compare with lag screw internal fixation. METHODS:Eight ankle joint specimens were col ected, and the biomechanical experiment was performed for stress analysis. The suture anchor technology and lag screw internal fixation were used respectively to treat the tibiofibular syndesmotic injury. The biomechanical properties of the stress strength, stiffness and stability were compared. RESULTS AND CONCLUSION:The biomechanical properties of the stress strength, stiffness and stability of suture anchor technology for the treatment of tibiofibular syndesmotic injury were better than those of lag screw internal fixation, and there were significant differences in the strength and stiffness between two methods (P<0.05);the stress shielding rate of suture anchor technology was lower than that of lag screw internal fixation, and the difference was significant (P<0.05);the tibiofibular syndesmosis separated displacement of suture anchor technology was lower than that of lag screw internal fixation, and the difference was significant (P<0.05). The results indicate that the suture anchor technology is a minimal invasion and good method to realize physiological reconstruction and elastic fixation with stable fixation strength and less trauma, and without secondary operation.